Door block



March 10, 1964 R s. STROTHER DOOR BLOCK Filed June 29, 1962 United States Patent 3,124,382 DOOR BLOCK Roscoe S. Strother, 426 Carter St., Vallejo, Calif. Filed June 29, 1962, Ser. No. 206,469 6 Claims. (Cl. 292-343) This invention relates to door restraining devices and more particularly to door stops.

It is an object of the present invention to provide a door block that gives the operator full control over the amount his door may be opened.

Another object of the present invention is to provide a door block that will prevent forcing by an intruder whenever the door is partially opened.

Another object of the present invention is to provide a door block with anti friction material on the sole that will dig into the floor or rug and any attempt to push the door open wider will cause the sole to dig in deeper.

Other objects of the invention are to provide a door block bearing the above objects in mind which is of simple construction, has a minimum number of parts, is inexpensive to manufacture and efficient in operation.

For other objects and for a better understanding of the invention, reference may be had to the following detailed description, taken in conjunction with the accompanying drawing, in which:

FIGURE 1 is a side view of a door block comprising the present invention;

FIGURE 2 is a fragmentary front view of the adjustable bar shown in FIGURE 1; and 1 FIGURE 3 is a bottom plan View of the base shown in FIGURE 1.

Referring now more in detail to the drawing, a door block made in accordance with the present invention is shown to include a triangularly configurated wedge 12 which frictionally engages the under side of door 14. A triangularly configurated block 16 made of suitable frictional material is fixedly secured within the sole of wedge 12 and frictionally engages floor 18. An elongated leaf spring 20 having an upwardly curved lip 22 is fixedly secured within wedge 12 and block 16 and projects rearwardly from wedge 12. Spring 20 springingly engages with floor 18 and consistently urges wedge 12 upwardly thus insuring complete surface contact of block 16 with floor 18. An elongated hollow rod 24 having an opening 26 is angularly and pivotably connected through the upper end of wedge 12 by pivot pin 28. An adjustable elongated rod 30 is freely and slidably received within opening 26 of rod 24 and a threaded set screw 31 is threadingly received within the upper end of rod 24 and urges against the lower end of rod 30 thus securing it in its adjusted position. The upper end of rod 30 is U-shaped in configuration forming a yoke 32 which freely receives shank 34 of door knob 36.

In operation, the operator places the wedge 12 beneath the door 14 and pushes or pulls rod 30 within opening 26 of rod 24 until yoke 32 correctly receives shank 34 of door knob 36. He then rotates set screw 31 until it abuts against the lower end of rod 30 thus securing door block 10 to door 14. Spring 20 in sliding engagement with floor 18 springingly urges the end of wedge 12 connected to rods 24 and 30 upward. In the event an intruder attempts to forceably enter by pushing against door 14 from the outside the bottom edge of door 14 encroaches against the upper surface of wedge 12 which is angularly inclined and thus the frictional block 16 is the sole of wedge 12 grippingly engages floor 18 with greater force each time greater force is exerted against the outside of door 14 by the intruder thus preventing the intruder from entering.

It will thus be recognized that the desired amount the door 14 may be opened is controlled entirely by the occupant of the dwelling from inside only.

It will be further noted that when the occupant urges against the door knob 36 to further close door 14 the wedge 12 secured to the lower end of rod 24 is thus moved with the door.

While various changes may be made in the detail construction, it shall be understood that such changes shall be within the spirit and scope of the present invention as defined by the appended claims.

What I claim as new and desire to protect by Letters Patent of the United States is:

1. A door block comprising, in combination, a substantially triangular-shaped wedge, a substantially triangularshaped block of frictional material carried within the lower surface of said wedge for gripping engagement with a floor, a pair of telescopic and substantially elongated rods secured to the upper end of said wedge, providing carrying means for said wedge when said door is urged partially closed and an elongated spring carried Within the sole portion of said wedge which slidably engages with said floor and springingly urges the upper end of said wedge upwardly.

2. A combination according to claim 1, wherein said telescoping rods, comprising slidable upper and lower rods, provide adjustment means for said Wedge and the upper end of the slidable upper rod received within the lower rod is angularly bent with a U-shaped yoke, said yoke freely receiving the shank of the door knob.

3. A combination according to claim 2, wherein said upper rod is adjusted so that the sole of said wedge flatly engages said floor and said rod is secured by a threaded set screw threadingly received in the upper end of said lower rod.

4. A combination according to claim 3, wherein said rods engaging with said shank of said door knob of said door provide carrying means for said wedge when said door is urged partially closed.

5. A combination according to claim 4, wherein the lower end of said lower rod is pivotably connected to a projecting pivot pin secured through the upper end of said wedge.

6. A combination according to claim 5, wherein said leaf spring is provided with an upwardly curved lip preventing the marring of said floor and the other end of said spring is secured within said triangular block of frictional material, and is further secured within the body of said wedge and springingly urges said wedge upward and is in frictional engagement with said floor.

References Cited in the file of this patent UNITED STATES PATENTS 

1. A DOOR BLOCK COMPRISING, IN COMBINATION, A SUBSTANTIALLY TRIANGULAR-SHAPED WEDGE, A SUBSTANTIALLY TRIANGULARSHAPED BLOCK OF FRICTIONAL MATERIAL CARRIED WITHIN THE LOWER SURFACE OF SAID WEDGE FOR GRIPPING ENGAGEMENT WITH A FLOOR, A PAIR OF TELESCOPIC AND SUBSTANTIALLY ELONGATED RODS SECURED TO THE UPPER END OF SAID WEDGE, PROVIDING CARRYING MEANS FOR SAID WEDGE WHEN SAID DOOR IS URGED PARTIALLY CLOSED AND AN ELONGATED SPRING CARRIED WITHIN THE SOLE PORTION OF SAID WEDGE WHICH SLIDABLY ENGAGES WITH SAID FLOOR AND SPRINGINGLY URGES THE UPPER END OF SAID WEDGE UPWARDLY. 